Virtual instrument software architecture: Difference between revisions

Revision as of 09:54, 19 September 2012

Revision as of 10:34, 6 November 2012

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The VISA standard<ref name="VISA Specification">{{cite news |url=http://www.ivifoundation.org/specifications/default.aspx

|publisher=IVI Foundation |title=VISA Specification}}</ref> includes specifications for communication with resources (usually, but not always, instruments) over T&M-specific I/O interfaces such as [[GPIB]] and [[VXI|VXI.]] There are also some specifications for T&M-specific [[Protocol (computing)|protocols]] over PC-standard I/O, such as VXI-11 (over [[TCPIP|TCP/IP]]) and USBTMCHiSLIP<ref name="USBIVI-6.1: TestHigh-Speed &LAN MeasurementInstrument ClassProtocol Specification(HiSLIP)">{{cite news |url=http://www.usbivifoundation.org/developersdownloads/devclass_docsClass%20Specifications/IVI-6.1_HiSLIP-2010-06-08.pdf

|publisher=IVI Foundation |title=IVI-6.1: High-Speed LAN Instrument Protocol (HiSLIP)}}</ref> or VXI-11<ref name="VXI-11 Bus Specification">{{cite news |url=http://www.vxibus.org/?q=node/206

|publisher=VXI Bus Consortium |title=VXI-11 Bus Specification}}</ref> (over [[TCPIP|TCP/IP]]) and USBTMC<ref name="USB Test & Measurement Class Specification">{{cite news |url=http://www.usb.org/developers/devclass_docs

|publisher=USB Implementers Forum Inc. |title=USB Test & Measurement Class Specification}}</ref> (over [[USB]]).

The VISA library has standardized the presentation of its operations over several software reuse mechanisms, including through a C [[Application programming interface|API]] exposed from Windows [[Library (computer science)#Dynamic linking|DLL]], visa32.dll and over the Microsoft [[Component Object Model|COM]] technology. A VISA[[.NET_Framework|.NET]] implementation is currently (2012) under development by the IVI Foundation. Although there are several VISA vendors and implementations, applications written against VISA are (nominally) vendor-interchangeable thanks to the standardization of VISA's presentation and operations/capabilities. Implementations from specific vendors {{Specify}} are also available for less common programming languages {{Specify}} and software reuse technologies.

==History==

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==References==

{{Reflist}}

== External links ==

* http://www.rohde-schwarz.de/appnote/1MA208 Fast Remote Instrument Control with HiSLIP - Application Note]

[[Category:Input/output]]